Improvement in machinery for the manufacture of horseshoe-blanks



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-F.,H0LUB. Machinery for the Manufacture of Horseshoe-Blanks.

No. 219,096. I Patented sepf.2,1s79.

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N4 PETERS. FHDTD-LITHDGRAPHER, WASHINGTON. D. C.

UNITED 'STATES PATENT OFFICE.

FRANK HOLUB, or CHICAGO, ILLINOIS, ASSIGNOE To NATIONAL HORSE- SHOE COMPANY, OE SAME PLACE.

IMPROVEMENT IN MACHINERY FOR THE MANUFACTURE 0F HORSESHOE-BLANKS.

Specification forming part of Letters Patent No. 219,096, dated September 2, 1879; application filed 4 May 16, 1879.

` series of blanks from the bar.

My apparatus, I may say in general terms, consists of a series of rolls mounted in suitable housings, and provided with a suitable number of grooves for reducing the billet and forming it into a rectangular bar, and also provided with a suitable number of dies for immediately afterward forming the bar into a connected series of blanks.

My invention is an improvement upon that shown in my United States Letters Patent N o. 205,386, and consists in the peculiar formation and combination of parts, hereinafter described, and then specilied in my claim.

In the accompanying drawings, illustrating my improvement, Figure lis a front elevation of a horseshoe-blank-forming machine, or so much thereof as is necessary to Show my in vention partly in section. Fig. 2 is a plan view of the same, partly in section, through the line 2 2 of Fig. l. Fig. 3 is a vertical transverse section through the lines 3 3 of Figs. l and 2. Figs. 4, 5, 6, 7, and Sshow the bar at different stages of the operation of forming into a connected series of horseshoe-blanks; and Figs. 4.a, 5a, 6, 7i", and 8LL are cross-sections of the same on the transverse lines of Figs. 4, 5, 6, 7, and 8.

I A indicates a frame of a rollin gmill of any ordinary pattern; B, an upper, and G a lower, series of rolls, the former mounted adjustably therein 5 and D D, tables provided with guideways for conducting the bars into the bite of the rolls.

As in the case of my patented invention above referred to, I propose in practice to employ three-high rolls, so that the bars can be passed through from one side and back from the other but it will be sufficient to describe -in detailtwo series of rolls, as when three-high rolls are employed the top series will be exactly like the bottom series.

` E E' indicate the first pair of rolls, provided with grooves e e', by which the heated billet is form ed into a rectangular bar, q, (Shown in Fig.

4,) suitable for making horseshoe-blanks. As`

set out in my said patent, there may be several such grooves in this pair of rolls, differing in size, the billet being first passed through the largest, and successively through the others, the groovesee being supposed to represent the smallest in such a-series of reducing-grooves but there is nothing novel in this.

The rectangular bar q is next passed to the pair of rolls F F', which are provided with grooves and dies, (marked ffl and f2f3.) The shapes of these parts are. such as I have found best adapted for my purpose, and are important to the success of the operation itis the object of my invention to accomplish.

In my said patent I propose to employ grooves and dies that would form angle-bars-thus, L 5 but I have found in practice that there are Serious difficulties with this plan, that greater power than is necessary is required, and that greater wear of the rolls and dies than is desirable is occasioned. I have, therefore, after numerous and costly experiments with fullsized working machinery, and at great expense, finally found complete success and satisfactory economy in my improved rolls, in which f is a rectangular groove, and f 1 is a die entering the groove, and adapted to form a bar, fr, of the outline in cross-section shown in Fig. 5a. f2 is a groove or die of the 'form shown, and f3 an annular projection or die iitting in the part f 2, so that the eect is to form a bar,| s, ofthe outline in cross-section shown in Fig. 6a. The groove and die, f and f 1, it will be seen, initiate the form of a bar rectangular on one side and concave on the other, which is completed in that form by the dies f2 and f 3. This is much' the best form for the next succeeding opera-4 tion of forming the toe-calk.

, In the plan of forming the toe-calk set out in my said patent, although practicable by the means there shown, I found by experience there were serious defects that I have not found to attend my presentimproved mjachine for forming the. calks, that I will now describe.

G G indicate a pair of rolls adapted to flatten and form the calks upon the bars s. The roll G is a plain roll, and the roll G is similar, except that it is provided with a series ofvdies or calli-recesses, g, on opposite sides. These calk-recesses are alike, except merely in size, and either size may be used', according to the size of calk desired to be produced. The roll G l might loe made small enough so that its circumference would only measure the proper length of one blank, in which case but one calli-recess or series of recesses would be formed; and it might also be very large, so as to have several recesses or series of recesses; but I prefer the size indicatedthat is, such that recesses on opposite sides Will be of the right distance apart. The bar s, being passed through the rolls G G', will be iiatteued except at the points opposite the calli-recesses, and will be given the form represented by the bar t, Fig. 7. This bar t is next passed through the rolls I-I H',

provided With the dies 7L h', which nish it in the manner shown by the bar u in Fig. 8, as will be apparent from the drawings Without minute description.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a horseshoe-blank-forming machine, the combination of the rolls F F', provided With the grooves and dies, ffl and f2 f3, all of substantially the conformation shown, the rolls G G, the latter provided with one or more calli-recesses, g, and the rolls H H', provided with the dies h h', of substantially the conformation shown, the combination being and operatin g substantially as and for the purposes set forth.

In testimony whereof I have hereunto subscribed my name.

FRANK HOLUB. Witnesses:

GHAs. W. REQUA, THos.. GILLEsPI'E. 

